Australia's tilt at the inaugural United Cup is effectively over after just one tie, with Great Britain winning through to the Sydney play-off by completing an upset win over Spain.
In the box seat for victory over the Spaniards after establishing a 2-0 lead when Cameron Norrie shocked Rafael Nadal and Katie Swan did a similar job on Nuria Parrizas-Dias, Great Britain went on with the job in Sydney on Sunday night.
Dan Evans was the hero for the Brits after sealing an unassailable 3-1 advantage with a grinding win over Albert Ramos-Vinolas.
It came after Great Britain had beaten Australia 3-2 in their opening tie.
With only the top team in each of the six groups progressing to the next round, Spain join Australia on the sidelines after the first phase.
Their players will, however, get some more match practice over the next two days when Australia and Spain meet in a dead tie.
Australia had high hopes coming into the tournament with a squad featuring Nick Kyrgios, Alex de Minaur and Ajla Tomljanovic.
But Kyrgios's 11th-hour withdrawal and injury to two-time Wimbledon quarter-finalist Tomljanovic put Australia's campaign into disarray.
Despite their advantage, the Brits still had some work to do on Sunday when Harriet Dart went down to Paula Badosa 7-6 (8-6) 6-7 (7-5) 1-6.
Dart belied her world ranking of No.98 to push Badosa all the way, at one stage only two points from winning the match in a thrilling second set tiebreaker.
But the No.13 steeled herself when it mattered most and ran away with the third set to get Spain back in the tie.
With Nadal waiting in the wings for a potential deciding fifth rubber, much hinged on what Ramos-Vinolas, a replacement for Pablo Carreno Busta, could do against Evans.
After a sluggish first set, the Spaniard roared back to life in the second and Evans, a disappointing first-up loser to Australia's Jason Kubler, looked on edge entering the decider.
However, the world No.27 secured a vital break in the seventh game and ultimately served out the contest for a 6-3 1-6 6-3 win, rendering the mixed doubles a dead rubber.
"I don't feel my strongest but I've got a great team behind me," Evans said.
"It helps that it's not a regular tournament; it's tough to throw the towel in when you've got all that lot behind you."
The US are in the box seat to meet Great Britain, a win against Germany set to secure their passage through to the Sydney semi-final.
